Merge "[SystemUI] 1.Remove the unnecessary log 2. update signal icon in bg thread" into sc-qpr1-dev am: c3af8564f9 am: 87af32b289

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16033980

Change-Id: I42580a377316928fdded4b45ea509c26cd069b78